Hi Ben,

Thanks for pointers.

ovsdb-server understands openflow?
We tried starting a server on ovsdb-server and now connection resets.

i.e we executed following command:
 ovn-sbctl --ovs=tcp://SERVER_IP lflow_list

And this time connection resets, packet capture show that as soon as 
sbctl sends OFPT_HELLO, server sends a FIN back.

So far, we could not figure how we can enable openflow on ovsdv-server (if at 
all it is possible).

Appreciate your help.

Regards,
Ankur


-----Original Message-----
From: Ben Pfaff [mailto:b...@ovn.org] 
Sent: Thursday, May 10, 2018 10:47 AM
To: Ankur Sharma <ankur.sha...@nutanix.com>
Cc: ovs-discuss@openvswitch.org; Mary Manohar <mary.mano...@nutanix.com>
Subject: Re: [ovs-discuss] Using --ovs with ovn-sbctl lflow-list

ovsdb-server(1)

On Thu, May 10, 2018 at 05:22:36PM +0000, Ankur Sharma wrote:
> Hi Ben,
> 
> Got it, thanks a lot for pointing out.
> Do we have some documentation indicating how to start tcp server  that switch 
> would listen to?
> 
> Appreciate your help
> 
> Regards,
> Ankur
> 
> 
> -----Original Message-----
> From: Ben Pfaff [mailto:b...@ovn.org]
> Sent: Wednesday, May 9, 2018 8:31 AM
> To: Ankur Sharma <ankur.sha...@nutanix.com>
> Cc: ovs-discuss@openvswitch.org
> Subject: Re: [ovs-discuss] Using --ovs with ovn-sbctl lflow-list
> 
> On Tue, May 08, 2018 at 11:44:44PM +0000, Ankur Sharma wrote:
> > Hi,
> > 
> > We are trying to use "--ovs" option with ovn-sbctl  lflow-list 
> > command 
> > (https://urldefense.proofpoint.com/v2/url?u=https-3A__github.com_ope
> > nv 
> > switch_ovs_commit_c2f4c39be4e288e7a08974aea53b18627a1ef9ef&d=DwIBAg&
> > c= 
> > s883GpUCOChKOHiocYtGcg&r=mZwX9gFQgeJHzTg-68aCJgsODyUEVsHGFOfL90J6MJY
> > &m 
> > =x0l3zFaEXEIKMYIEKQslilS0ifJUN_CD16qSs2wQD64&s=0fZZp6JkZJLQJE20wvPcF
> > ce
> > xCAaSuBEvKY6R5qc3LYo&e=) Running it on remote controller always 
> > fails with connection refused error.
> > 
> > Do we have to start something on vswitch side?
> > Please feel free to point out if we are missing something basic.
> > 
> > Example:
> > ovn-sbctl --ovs=tcp:HYPERVISOR_IP dump-flows
> > 
> > 2018-05-08T23:43:16Z|00001|stream|WARN|The default OpenFlow port 
> > number has changed from 6633 to 6653
> > 2018-05-08T23:43:16Z|00002|sbctl|WARN|tcp:10.15.17.211: connection 
> > failed (Connection refused)
> 
> Is the switch listening for tcp connections?  It doesn't by default.
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